I am at wit's end with my St. Augustine (Floratam) lawn. The same
areas gradually die out every year. I have taken samples into my
Florida county extension office and the results have been root rot
and/or fungus. Twice I have totally removed the dead grass, loosened
the soil 6" deep, mixed in organic matter, and resodded. The first
week I watered twice a day, the second week once a day, and every few
days thereafter when the grass showed signs of wilting. It has been a
couple months since the last resodding, and about 1/4 of the new sod
appears dead. It looks like it never took root. I applied Scotts
MaxGuard (fertilizer plus insecticide) a couple weeks after I laid the
sod and have also applied Scotts Lawn Fungus Control twice. The areas
that die are in mostly sun.

Thanks,
Jim